If you were to go into a shop and an item wasn't priced would you be likely to still purchase it?
Yes, but I would know the price first!
Maybe, depending on how much it is when I get them to price check it. I'll have a price in mind, and if they can’t match or beat it, no sale. No different than if it had a price tag on it.
Yeah usually stores will have these crazy devices that amplify light through the stimulated emission of radiation, and fire these beams of energy at the barcode which will give you the price.